(57) The system for reducing energy consumption improving reactors for heterogeneous synthesis
reactions, particularly for ammonia and methanol synthesis, in which the reaction
gas flew axially through the catalyst bed(s) of said reactors, now involving the insertion
in at least a part of the above catalyst beds of : two cylindrical substantially perforated
walls for delimiting laterally the catalytic beds; a bottom closure diaphragm in between
said cylindrical walls; an upper minor portion of at least one of said walls is unperforated
and the reaction gas now flows substantially radially (inwardly or outwardly) through
said beds. According to particular embodiments of the invention a diaphragm and/or
a catalyst size gradient can be brought about on the top of at least one bed, said
diaphragm being partially perforated or totally closed.
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